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Title: 135Xe measurements with a two-element CZT-based radioxenon detector for nuclear explosion monitoring

Abstract

Measurement of elevated concentrations of xenon radioisotopes ( 131mXe, 133mXe, 133Xe and 135Xe) in the atmosphere has been shown to be a very powerful method for verifying whether or not a detected explosion is nuclear in nature. These isotopes are among the few with enough mobility and with half-lives long enough to make their detection at long distances realistic. Existing radioxenon detection systems used by the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) suffer from problems such as complexity, need for high maintenance and memory effect. To study the response of CdZnTe (CZT) detectors to xenon radioisotopes and investigate whether it is capable of mitigating the afore-mentioned issues with the current radioxenon detection systems, a prototype detector utilizing two coplanar CZT detectors was built and tested at Oregon State University. The detection system measures xenon radioisotopes through beta-gamma coincidence technique by detecting coincidence events be-tween the two detectors. Here in this paper, we introduce the detector design and report our measurement results with radioactive lab sources and 135Xe produced in the OSU TRIGA reactor. Minimum Detectable Concentration (MDC) for 135Xe was calculated to be 1.47 ± 0.05 mBq/m 3.

Authors:
ORCiD logo [1];  [1];  [1]
  1. Oregon State Univ., Corvallis, OR (United States). School of Nuclear Science and Engineering
Publication Date:
Research Org.:
Univ. of Michigan, Ann Arbor, MI (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20)
OSTI Identifier:
1367561
Alternate Identifier(s):
OSTI ID: 1419102; OSTI ID: 1487104
Grant/Contract Number:  
NA0002534
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Environmental Radioactivity
Additional Journal Information:
Journal Volume: 169-170; Journal Issue: C; Journal ID: ISSN 0265-931X
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Radioxenon detection; Nuclear explosion monitoring; Beta-gamma coincidence; CZT; Coplanar detector; Digital pulse processing Digital pulse processing

Citation Formats

Ranjbar, Lily, Farsoni, Abi T., and Becker, Eric M. 135Xe measurements with a two-element CZT-based radioxenon detector for nuclear explosion monitoring. United States: N. p., 2017. Web. doi:10.1016/j.jenvrad.2016.12.003.
Ranjbar, Lily, Farsoni, Abi T., & Becker, Eric M. 135Xe measurements with a two-element CZT-based radioxenon detector for nuclear explosion monitoring. United States. doi:10.1016/j.jenvrad.2016.12.003.
Ranjbar, Lily, Farsoni, Abi T., and Becker, Eric M. Fri . "135Xe measurements with a two-element CZT-based radioxenon detector for nuclear explosion monitoring". United States. doi:10.1016/j.jenvrad.2016.12.003. https://www.osti.gov/servlets/purl/1367561.
@article{osti_1367561,
title = {135Xe measurements with a two-element CZT-based radioxenon detector for nuclear explosion monitoring},
author = {Ranjbar, Lily and Farsoni, Abi T. and Becker, Eric M.},
abstractNote = {Measurement of elevated concentrations of xenon radioisotopes (131mXe, 133mXe, 133Xe and 135Xe) in the atmosphere has been shown to be a very powerful method for verifying whether or not a detected explosion is nuclear in nature. These isotopes are among the few with enough mobility and with half-lives long enough to make their detection at long distances realistic. Existing radioxenon detection systems used by the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) suffer from problems such as complexity, need for high maintenance and memory effect. To study the response of CdZnTe (CZT) detectors to xenon radioisotopes and investigate whether it is capable of mitigating the afore-mentioned issues with the current radioxenon detection systems, a prototype detector utilizing two coplanar CZT detectors was built and tested at Oregon State University. The detection system measures xenon radioisotopes through beta-gamma coincidence technique by detecting coincidence events be-tween the two detectors. Here in this paper, we introduce the detector design and report our measurement results with radioactive lab sources and 135Xe produced in the OSU TRIGA reactor. Minimum Detectable Concentration (MDC) for 135Xe was calculated to be 1.47 ± 0.05 mBq/m3.},
doi = {10.1016/j.jenvrad.2016.12.003},
journal = {Journal of Environmental Radioactivity},
issn = {0265-931X},
number = C,
volume = 169-170,
place = {United States},
year = {2017},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 4 works
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Figures / Tables:

Table 1 Table 1: Half-lives and characteristic energies for the decay of 131mXe, 133mXe, 133Xe, and 135Xe (Farsoni et al., 2013).

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